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soc: rockchip: pvtm: Stop calculating cycles first if last status is enabled

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Change-Id: I7a2188c9f94d776f5421aa25ac2e6e5f0f3042c8
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
This commit is contained in:
Finley Xiao
2018-03-07 14:51:32 +08:00
parent c046b46454
commit b4c3912dce
1 changed files with 8 additions and 0 deletions
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8
drivers/soc/rockchip/rockchip_pvtm.c
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@@ -45,6 +45,8 @@
#define RK3399_PVTM_GPU 3
#define RK3399_PVTM_PMU 4
#define PVTM_START_EN 0x1
#define wr_mask_bit(v, off, mask) ((v) << (off) | (mask) << (16 + off))
#define PVTM(_ch, _name, _num_sub, _start, _en, _cal, _done, _freq) \
@@ -285,6 +287,12 @@ static u32 rockchip_pvtm_get_value(struct rockchip_pvtm *pvtm,
}
}
/* if last status is enabled, stop calculating cycles first*/
regmap_read(pvtm->grf, pvtm->con, &sta);
if (sta & PVTM_START_EN)
regmap_write(pvtm->grf, pvtm->con,
wr_mask_bit(0, channel->bit_start, 0x1));
regmap_write(pvtm->grf, pvtm->con,
wr_mask_bit(0x1, channel->bit_en, 0x1));